6
Participants
Start Date
December 22, 2021
Primary Completion Date
January 27, 2022
Study Completion Date
January 27, 2022
Doctor Videos
Receive ads on Facebook or through our website with videos in which health professionals tell people to get the Covid-19 vaccine. The health professionals answer common questions about the Covid-19 vaccine, such as how mRNA vaccines work, and what types of side effects to expect.
Sharing Videos
Receive ads on Facebook with videos in which health professionals tell people to encourage their unvaccinated friends to get the Covid-19 vaccine.
Sharing Videos (Influencers)
Receive ads on Facebook with videos in which health professionals tell people to get their most influential friends to encourage their unvaccinated friends to get the Covid-19 vaccine.
Vaccine Ambassador
"Adults in participating geographic areas can sign up to be a vaccine ambassador on a website that the study team has built. The study team will send updates to vaccine ambassadors when new content has been posted to the website (e.g. a new video) and/or to remind the vaccine ambassadors to encourage their friends to get vaccinated. The study team will incentivize vaccine ambassadors by entering participating ambassadors into a lottery for a prize."
Video framing
"The same videos will be displayed using two different frames: a myth frame and a fact frame. Visitors to the vaccine content website will randomly receive one framing of each video."
Video order
The order in which videos appear on the vaccine content website will be randomized.
Massachusetts Institute of Technology, Cambridge
Facebook, Inc.
OTHER
Code3
INDUSTRY
Stanford University
OTHER
Harvard University
OTHER
Yale University
OTHER
Johns Hopkins University
OTHER
Massachusetts General Hospital
OTHER
Ludwig-Maximilians - University of Munich
OTHER
National Institutes of Health (NIH)
NIH
Massachusetts Institute of Technology
OTHER